Christian Gerhartsreiter, the man who posed as a member of the wealthy Rockefeller family from the early ’90s until 2008, was found guilty Wednesday of the 1985 murder Southern California man John Sohus.

Authorities said Gerhartsreiter was a German immigrant who lived another life long ago, occupying a guest cottage at the home of Sohus’ mother in the ritzy suburb of San Marino …

The town folk didn’t connect him with the disappearance of [Linda and John Sohus] in 1985, but shortly after they vanished, so did he.

No trace of Linda has been found but John’s bones were unearthed during excavation of a swimming pool at the San Marino property in 1994.

Gerhartsreiter, 52, was charged with Sohus’ murder in 2011, three years after he blew his “Rockefeller” identity by attempting to kidnap his daughter. At the time, he was separated from his wife, Sandra Boss, a well-educated, successful financier who believed he was really a Rockefeller.

In 2009, Vanity Fair published an extensive piece about Gerhartsreiter’s con. TIME later named “Clark Rockefeller” one of the top 10 impostors of all time. In 2010, there was even a Lifetime movie about Gerhartsreiter’s marriage to Boss.